.main {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.main header {
  width: 100%;
  height: 1rem;
  background-color: red;
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: .5rem;
}

.main .list {
  flex: 1;
  overflow: hidden;
  position: relative;
}

.main .list::before {
  content: attr(down);
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: .6rem;
  line-height: .6rem;
  text-align: center;
  background-color: mediumvioletred;
  color: #fff;
}
